Why is oil leaking from the top of my oil dipstick it seems to do it worse when you cut on the heater or defrost in the mornings other than that it doesn't do it very often?

Its a little possible that your headcaskit is blown. The gaskit stops antifreeze from mixing with the oil. Check the oil cap if there is a gel like substance on it(it will be a creamy looking color) then the gaskit is blown. Also check your antifreeze to see if it is a brownish color. Hope this helps.